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+/*
+ * NEC panel support
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/twl4030.h>
+#include <linux/spi/spi.h>
+
+#include <mach/gpio.h>
+#include <mach/gpio.h>
+#include <plat/mux.h>
+#include <asm/mach-types.h>
+#include <plat/control.h>
+
+#include <plat/display.h>
+
+#define LCD_XRES 800
+#define LCD_YRES 480
+
+#define LCD_PIXCLOCK_MIN 21800 /* NEC MIN PIX Clock is 21.8MHz */
+#define LCD_PIXCLOCK_TYP 23800 /* Typical PIX clock is 23.8MHz */
+#define LCD_PIXCLOCK_MAX 25700 /* Maximum is 25.7MHz */
+
+/* Current Pixel clock */
+#define LCD_PIXEL_CLOCK LCD_PIXCLOCK_MIN
+
+
+/*NEC NL8048HL11-01B Manual
+ * defines HFB, HSW, HBP, VFP, VSW, VBP as shown below
+ */
+
+static struct omap_video_timings nec_panel_timings = {
+ /* 800 x 480 @ 60 Hz Reduced blanking VESA CVT 0.31M3-R */
+ .x_res = LCD_XRES,
+ .y_res = LCD_YRES,
+ .pixel_clock = LCD_PIXEL_CLOCK,
+ .hfp = 6,
+ .hsw = 1,
+ .hbp = 4,
+ .vfp = 3,
+ .vsw = 1,
+ .vbp = 4,
+};
+
+static int nec_panel_probe(struct omap_dss_device *dssdev)
+{
+ dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
+ OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_RF |
+ OMAP_DSS_LCD_ONOFF;
+ dssdev->panel.timings = nec_panel_timings;
+ dssdev->panel.recommended_bpp = 16;
+
+ return 0;
+}
+
+static void nec_panel_remove(struct omap_dss_device *dssdev)
+{
+}
+
+static int nec_panel_enable(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ mdelay(4);
+ if (dssdev->platform_enable)
+ r = dssdev->platform_enable(dssdev);
+
+ return r;
+}
+
+static void nec_panel_disable(struct omap_dss_device *dssdev)
+{
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+ mdelay(4);
+}
+
+static int nec_panel_suspend(struct omap_dss_device *dssdev)
+{
+ nec_panel_disable(dssdev);
+ return 0;
+}
+
+static int nec_panel_resume(struct omap_dss_device *dssdev)
+{
+ return nec_panel_enable(dssdev);
+}
+
+static struct omap_dss_driver nec_driver = {
+ .probe = nec_panel_probe,
+ .remove = nec_panel_remove,
+
+ .enable = nec_panel_enable,
+ .disable = nec_panel_disable,
+ .suspend = nec_panel_suspend,
+ .resume = nec_panel_resume,
+
+ .driver = {
+ .name = "NEC_panel",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int
+spi_send(struct spi_device *spi, unsigned char reg_addr, unsigned char reg_data)
+{
+ int ret = 0;
+ unsigned int cmd = 0;
+ unsigned int data = 0;
+
+ cmd = 0x0000 | reg_addr; /* register address write */
+ data = 0x0100 | reg_data ; /* register data write */
+ data = (cmd << 16) | data;
+ if (spi_write(spi, (unsigned char *)&data, 4))
+ printk(KERN_WARNING "error in spi_write %x\n", data);
+
+ udelay(10);
+ return ret;
+}
+
+
+static int init_nec_wvga_lcd(struct spi_device *spi)
+{
+ /* Initialization Sequence */
+ spi_send(spi, 3, 0x01); /* R3 = 01h */
+ spi_send(spi, 0, 0x00); /* R0 = 00h */
+ spi_send(spi, 1, 0x01); /* R1 = 0x01 (normal), 0x03 (reversed) */
+ spi_send(spi, 4, 0x00); /* R4 = 00h */
+ spi_send(spi, 5, 0x14); /* R5 = 14h */
+ spi_send(spi, 6, 0x24); /* R6 = 24h */
+ spi_send(spi, 16, 0xD7); /* R16 = D7h */
+ spi_send(spi, 17, 0x00); /* R17 = 00h */
+ spi_send(spi, 18, 0x00); /* R18 = 00h */
+ spi_send(spi, 19, 0x55); /* R19 = 55h */
+ spi_send(spi, 20, 0x01); /* R20 = 01h */
+ spi_send(spi, 21, 0x70); /* R21 = 70h */
+ spi_send(spi, 22, 0x1E); /* R22 = 1Eh */
+ spi_send(spi, 23, 0x25); /* R23 = 25h */
+ spi_send(spi, 24, 0x25); /* R24 = 25h */
+ spi_send(spi, 25, 0x02); /* R25 = 02h */
+ spi_send(spi, 26, 0x02); /* R26 = 02h */
+ spi_send(spi, 27, 0xA0); /* R27 = A0h */
+ spi_send(spi, 32, 0x2F); /* R32 = 2Fh */
+ spi_send(spi, 33, 0x0F); /* R33 = 0Fh */
+ spi_send(spi, 34, 0x0F); /* R34 = 0Fh */
+ spi_send(spi, 35, 0x0F); /* R35 = 0Fh */
+ spi_send(spi, 36, 0x0F); /* R36 = 0Fh */
+ spi_send(spi, 37, 0x0F); /* R37 = 0Fh */
+ spi_send(spi, 38, 0x0F); /* R38 = 0Fh */
+ spi_send(spi, 39, 0x00); /* R39 = 00h */
+ spi_send(spi, 40, 0x02); /* R40 = 02h */
+ spi_send(spi, 41, 0x02); /* R41 = 02h */
+ spi_send(spi, 42, 0x02); /* R42 = 02h */
+ spi_send(spi, 43, 0x0F); /* R43 = 0Fh */
+ spi_send(spi, 44, 0x0F); /* R44 = 0Fh */
+ spi_send(spi, 45, 0x0F); /* R45 = 0Fh */
+ spi_send(spi, 46, 0x0F); /* R46 = 0Fh */
+ spi_send(spi, 47, 0x0F); /* R47 = 0Fh */
+ spi_send(spi, 48, 0x0F); /* R48 = 0Fh */
+ spi_send(spi, 49, 0x0F); /* R49 = 0Fh */
+ spi_send(spi, 50, 0x00); /* R50 = 00h */
+ spi_send(spi, 51, 0x02); /* R51 = 02h */
+ spi_send(spi, 52, 0x02); /* R52 = 02h */
+ spi_send(spi, 53, 0x02); /* R53 = 02h */
+ spi_send(spi, 80, 0x0C); /* R80 = 0Ch */
+ spi_send(spi, 83, 0x42); /* R83 = 42h */
+ spi_send(spi, 84, 0x42); /* R84 = 42h */
+ spi_send(spi, 85, 0x41); /* R85 = 41h */
+ spi_send(spi, 86, 0x14); /* R86 = 14h */
+ spi_send(spi, 89, 0x88); /* R89 = 88h */
+ spi_send(spi, 90, 0x01); /* R90 = 01h */
+ spi_send(spi, 91, 0x00); /* R91 = 00h */
+ spi_send(spi, 92, 0x02); /* R92 = 02h */
+ spi_send(spi, 93, 0x0C); /* R93 = 0Ch */
+ spi_send(spi, 94, 0x1C); /* R94 = 1Ch */
+ spi_send(spi, 95, 0x27); /* R95 = 27h */
+ spi_send(spi, 98, 0x49); /* R98 = 49h */
+ spi_send(spi, 99, 0x27); /* R99 = 27h */
+ spi_send(spi, 102, 0x76); /* R102 = 76h */
+ spi_send(spi, 103, 0x27); /* R103 = 27h */
+ spi_send(spi, 112, 0x01); /* R112 = 01h */
+ spi_send(spi, 113, 0x0E); /* R113 = 0Eh */
+ spi_send(spi, 114, 0x02); /* R114 = 02h */
+ spi_send(spi, 115, 0x0C); /* R115 = 0Ch */
+ spi_send(spi, 118, 0x0C); /* R118 = 0Ch */
+ spi_send(spi, 121, 0x30); /* R121 = 0x30 (normal), 0x10 (reversed) */
+ spi_send(spi, 130, 0x00); /* R130 = 00h */
+ spi_send(spi, 131, 0x00); /* R131 = 00h */
+ spi_send(spi, 132, 0xFC); /* R132 = FCh */
+ spi_send(spi, 134, 0x00); /* R134 = 00h */
+ spi_send(spi, 136, 0x00); /* R136 = 00h */
+ spi_send(spi, 138, 0x00); /* R138 = 00h */
+ spi_send(spi, 139, 0x00); /* R139 = 00h */
+ spi_send(spi, 140, 0x00); /* R140 = 00h */
+ spi_send(spi, 141, 0xFC); /* R141 = FCh */
+ spi_send(spi, 143, 0x00); /* R143 = 00h */
+ spi_send(spi, 145, 0x00); /* R145 = 00h */
+ spi_send(spi, 147, 0x00); /* R147 = 00h */
+ spi_send(spi, 148, 0x00); /* R148 = 00h */
+ spi_send(spi, 149, 0x00); /* R149 = 00h */
+ spi_send(spi, 150, 0xFC); /* R150 = FCh */
+ spi_send(spi, 152, 0x00); /* R152 = 00h */
+ spi_send(spi, 154, 0x00); /* R154 = 00h */
+ spi_send(spi, 156, 0x00); /* R156 = 00h */
+ spi_send(spi, 157, 0x00); /* R157 = 00h */
+ udelay(20);
+ spi_send(spi, 2, 0x00); /* R2 = 00h */
+ return 0;
+}
+
+static int dss_spi_probe(struct spi_device *spi)
+{
+ spi->mode = SPI_MODE_0;
+ spi->bits_per_word = 32;
+ spi_setup(spi);
+
+ init_nec_wvga_lcd(spi);
+
+ omap_dss_register_driver(&nec_driver);
+ return 0;
+}
+
+static int dss_spi_remove(struct spi_device *spi)
+{
+ omap_dss_unregister_driver(&nec_driver);
+
+ return 0;
+}
+
+static int dss_spi_suspend(struct spi_device *spi, pm_message_t mesg)
+{
+ spi_send(spi, 2, 0x01); /* R2 = 01h */
+ mdelay(40);
+
+ return 0;
+}
+
+static int dss_spi_resume(struct spi_device *spi)
+{
+ /* reinitialize the panel */
+ spi_setup(spi);
+ spi_send(spi, 2, 0x00); /* R2 = 00h */
+ init_nec_wvga_lcd(spi);
+
+ return 0;
+}
+
+static struct spi_driver dss_spi_driver = {
+ .probe = dss_spi_probe,
+ .remove = __devexit_p(dss_spi_remove),
+ .suspend = dss_spi_suspend,
+ .resume = dss_spi_resume,
+ .driver = {
+ .name = "disp_spi",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init nec_lcd_init(void)
+{
+ return spi_register_driver(&dss_spi_driver);
+}
+
+static void __exit nec_lcd_exit(void)
+{
+ return spi_unregister_driver(&dss_spi_driver);
+}
+
+
+module_init(nec_lcd_init);
+module_exit(nec_lcd_exit);
+MODULE_LICENSE("GPL");
+